sorry, my bad, i don't do any c programming these days.
but to be pedantic, i think you mean define rather than declare, though of course you can also declare things at different scopes.
but to be pedantic, i think you mean define rather than declare, though of course you can also declare things at different scopes.
int x;
f();
x=3;
(I assume f() is a call.)
If you try to use `x` before it is defined (the assignment) your compiler should give you a warning, at least. If it doesn't, find a new compiler.
> A definition of an identifier is a declaration for that identifier that:
> — for an object, causes storage to be reserved for that object; [...]
But initialization (in C) does not occur for block-scope objects without the optional initializer.